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June 21,1927. 1,633,242

G. O. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept.l0, 1924 12 Sheets-Sheet 1' Cane 379 Underwear 5.00

41 Randolph SLILW. v

Mr.A,C.Benn,

3526 Gui-gin Avo. ,)I.W.

June 21, 1927. 1,633,242

G. O. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept.l0, 1924 12 Sheets-Sheet 2 June 1 1927.

. e. o. DEGENER ADDING ATTACHMENT, FOR TYPEWRITING MACHINES Filed Sept.l0, 1924 12 Sheets-Sheet 3 G. O. by has vllA ll... a rwlldln rwl llllllllllllillllJL June 21, 1927. 1,633,242

G. O. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept.10. 1924 12 Sheets-Sheet 4 June 21 1927. 1,633,242

G. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept. 10, 1924 12 Sheets-Sheet 5 June 21, 1927.

G. O. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES 12 sheets sheet 6 7 Filed Sept. 10. 1924 June 21, 1927. 1,633,242

6. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept. 10, 1924 12 Sheets-Sheet 7 1,633,242 .June 1927' G. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept.l0, 1924 12 Sheets- S heet s June 21,1927. 1,633,242

a. 0. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sept.l0, 1924 12 Sheets-Sheet 9 u e G. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES Filed Sent. 10. 1924 12 Sheets-Sheet l0 I'V 6.021; E

June 2 1927.

G. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING MACHINES 12 Sheets-Sheet 11 Filed Sept. 10. 1924 1,633 242 June 1927' G. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING IIACHINES Filed Sept.10., 1924 12 Sheets-Sheet 12 Patented June 21, 1927.-

UNITED STATES ,LPATENT, OFFICE...

GUSTAVE O. DEGENER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO ROYAL IYIE- WRITER COMPANY, INC.,- OF NEW YORK, N. .Y., A CORPORATION OF NEW YORK 4 ADDING ATTAC MENT ronrrrnwmrme MACHINES.

Application filed September 10, 1924.- Serial No. 736,896.

My invent-ion relates primarily to an attachment for typewriting machines which may be placed in position thereon and removed therefrom quickly and easily without any modification of the typewriting machine itself. To remove the attachment it is only necessary to unhook the operating-levers from the numeral key levers and} remove three screws. All parts can. thereupon be detached from the frame of the typewriting machine as a unit with*tl1 e"exception' of a small member carried by the type'writing machine carriage which in no way affects the operation of the typewriting machine. This may also be readily removed, but this is 'unnecessary.

The attachment is located "at one side of the machine whereitdoes not in any wayfinterfere with the usual'op'erations of the 'machine anddoes notobstruct'the line of sight to the paperas is common'in-many'cases. Moreover, it isjautomati'cally connectedto the carriage of the ty'pewriting machine only when the latte'ris in the computing'zone, and by'the movementof a small 'l elvercarried by the carriage it. may be prevented from such automatic connection soi thatjthe typewriting machine mayflbe used to write in the usual manneriwithout computing? Furthermore fwhen thus entirely' discofnnected, or when tht'e car'riagef'is"not in'the computing zones. the adding'niechanism does not in any way obstrucfitlie'mo'vement, of'th'e carriage and only very slightlyincreases-the force necessary to operate thenu'm eral' keys. \Vhile illustrated as'appli'ed tothefw'ell known Royal standard machine, "is to be understood that the attachment maybeapplied to any of the standard commercial ma"- chines. only minor changes, inftheconnections being required'and none in the' structure of the adding mechanism itself.

Another main object of the inventionflhas been the production of an attachment which will be comparatively simple t o construct and less costly to manufacture than prior devices of this character. ThissimpIicity has been attained in part by various novel features which will appear from the detailed description. and also because it'is intended to d a definite class of Work, and may of the complexities which have been thought necessary n prior constructions have been avoided. i

This computing-attachment is designed primarily for billing purposes and can be the figures of which at any time,'show the sum of the amounts written.- I

- When a bill is fi'niflshe'dand it is desired to write the total, the carriage is movedinto the second computing zone, a lever is moved to subtractpo'sitio'n, and the operator writes the amount appearing in the column totalizer. This will clear the column itotalizeir,

while'at the s'a'me'time the amount is set up in the grand-totalizer. Succeeding bills are written i'n'the same mannerfwithout further attention on the part' of the operator, 'since the' 'retu'rn of the rriage to* position for writing 'itenriira? new bill automatically return's the-lever to add'position.

It 's common '11 work of thischaracterto give to theoperator a large number of the tickets which have been made out in'the departments of the store 'for charge to various 'cu'stomers o'nthe' proper bills; 'The bookkeeper or other operator will "list' all of the tickets on any desired form of'listing machine, thus obtaining a'grand totah' Obviously, when thebillihg 'operatorhas'completed' the work, the total appearing on the grand totalizer should agree with this totafl obtained from the listingmachine -Oneof the objections to computing machines previously employed for performing this class of work has been that the operator may make an error in copying the total of some bill'from the column totalizer register.

If this is not noted, the totalof the bill just written will be too small by the amount not copied and the register will not be cleared. However, in all'fprevious constructions the succeeding; hill emfld be written vitlifltiii bj totth -in en i n i t Pr en an such'error. 'Mean s are provided whereby if the total is not correctly. copied from the register of the cohi'mntotalizi', it will be impossible to return the carriage to ppsition for writing the next item on the bill. The opera r wi henlmmv; t t th n herihasbeenimproperly copied ,and will correct the same. As soon as this is done and t-h e.-clumn register completely wcleared so that alljunitsstandntzero; the {carriage can be returnecl to, its right hand; position for beginning a new-bill, All chanceofierror t ron1 this source;1s therefore removed.

Another important feature of the invention is the provision of a construction wheren;: l1. e mputat n wh her: debit or cr1edits,-- ar e enteped -in onlyz QIie' 'egZStQr, aftep-nvhich this is cleared as th e; total is transierred l;( thj grand t t-alizer. There are never two registersi-adding. at. the same time. The advantege -o f-this fact-lies in L re-ab i y: emeketent a; new b l which meyi o e g or i u to? str k ng: Bong "num a keys Q i'u hfi JPYR WFitQ y merely pl t g the mlumnit teliiee .913 -.v. a has been; written; gan nIheni-rewe tm ethe b l T'h S- UE Ii-Way: tfifi a' ib ii p e q a si ce. th s; no operat .evb lei h e ll.; em.s, q e he il -renam n sm t n Anq hsz'r 0m 1nna 2 m eie r i n-pp rei nsi tthi hara ter; ar es= rem-.; ie= rth at-- it; is1oc'casiopglly necessary to wri be a c e ititem iwhki l-sh llldi be isnb resz ed it m the sum of tlreipmviqus debit .i tems'already ann x d-i. nhe' qlumnt ti zee. i s 1 1. ess 'ro tor: he. gera qbte htit l l subtract lever.- fto the-subtracting? position f e nt iig t i c d t i m Int-the 1* same o"a y= p zwisismi.t pr vwt-the con.- .trary. the operator might; returmfihecarriage nd wr e; h nex t m-,ew ich deb t, without rnoying 't-he lever; beck to: odd. p0.- sitiQ I; hEW uP QW -QQ I m ans wh y whene e r d t 1min v i ttem w Sui-k treated fro m the column; totglrnen itwill be p ible t 'Q f h-;% 9= o: e positionfor-writingltlre nexgtline unless the leveris moved back to ndct position. This prevents any errors o'f-thej (glmr artcrabove 'm tioned I .AfStLll iurt-her source of; error arises from the tact-that when .theoperatordesires to .WEEIQB the total of the biILclezming the column. totnhzer-and-entering, the total in the grand totalizer, iteisnlsoi necessaryto move the lever to subtract position; Occasionally the writer might. forget to do this. If the lever remains in the add position the sum written which is copied from the column totalizer would be subtracted from the grand totnlizer. The register of the grand totalizer would therefore be inaccurate and r the register of the column totulizer instozuii of being clear would show C .\'I\ct l twice pron s m; It her it"QTltlQi W whereby'if' this error is made-it is imp-as forth eoperatorto. return the carriage to position fox-"wrung a. new line. Attencgl leth to the error. To correct the same it is on y necessary trposition the carriage 1n the zone of the grand totalizer,

set the layer-properly to subtract, and write the prgopertotal twice, the numerals in each case being written immediately on top of those previously written and therefore it. is not necessary to write a new bill. The colunmfiotalizer is then cleared and the proper the-sector's: which govern the movement of the sregister wheels. This, enables a very s mgllcompact mechzmismjor obtaining this "E W BZ si c instead. o i g? n a y i entond the same for the fulL width of the stypepititer 'lcey.boardit isionly necessary to lu ye-itextendrelativcl short distance t;1;1{en, up, by-the ninc sectors A, further. cl ent of the invention is: to

provide extreme:-

plo a n eliicic: t menus to; ,instantlyconnecti1g. or disconnecting .the typewriter. oarxgiageand the computing registers This. menus. ,en'rbo diest a finger R fitq 9n thety e s t r cs fln -itroned. as motto-interfere. with any of the usnu htypeivriter mechanism but .which (z-m be operated instantly. to more, pick-up (log to a; position-whore it, wilt connect the curringe-tto theicqmputiug mecnnnism when in the computing, zone or -to asecond position where it-pvyill be tree. entirely f rom wany, connection, with the computing mechanism re gardlessof the: position of, the. carriage.

Another; object oi the invrntiou is the provision o't means whereby the inpvon'ient .Qfizthf? register to its extreme. right hand position will automaticajL- disconnect he computing. mechanisn'ifront the. runners] keys ot thetypewriter.

Another objectofi the invention is, the provision. of'means whereby the con'iputing mechanism, may he momentarily (Esconnected from the numeral keys of the type writer whenever it is desired to rewrite a figure in the computing zone which has already been entered in'the'register.

Since the device is provided with full stroke mechanism which prevents the return of any actuated numeral type bar until it sarily follows that any type bar whose key lever was erroneously depressed would be obliged to move to printing position even if the operator had struck the wrong key without force enough to print from the same. My invention provides means whereby any type bar thus wrongly moved part-way to printing position may be permitted'to return to normal without having eflected any operation of the computing mechanism.

Numerous other objects of the invention will be apparent from the following detailed description and the appended claims.

ln the'drawings:

Figure 1 is a top plan view of the attachment in position on a typewriting machine conventionally illustrated,.and also showing a sample of the character of work' that the invention is particularly intended to perform. i Figure 2 a perspective view of 'the attachment removed from the machine.

Figure 3 .is.'a top plan view oft he computing mechanism with the register removed. 7

Figure 4 is a similarview witlithe register in place. 1f a f F'gure 5 is a vertical section" on the line 55 of Figure 3 with the parts in normal position. v

Figure 6 is a siinilarf section 'of a'portion of the computing ,mechanisr'nwiththe parts shown 'in the position whili they'occupy at the initia-l'depress'ionof a key.

Figure 7 is a similarjview showingfthe position of the parts with the key about half depressed. Figure 8 is a detail of the cam gear in the position which it occupies when the' 'key, is fully depressed."

Figure 9 is -a sectional view similarto Figures 6 and 7 biltshowing the position of the parts just after the beginning of the return movement of the key.

Figure 10 is a section similar to Figure 5 but viewed from the opposite side'of the machine. Q Figure 11 is a section showin'gthe'rclation of the cancel lever to 'the canifgear and other parts. h

Figure 12 is a detail view. showing a portion of the unit pinion sleeve and means for shifting the same. Figure 13 is a disassembled view of the means for shifting the unit pinion sleeve.

Figure 14 is a perspective view of certain error check and disconnecting mechanism.

tion showino Figure 15 is a rear view of the attachment with a portion of the cover broken away.

Figure 16 is'a section on the line 16-16 of Figure 15, showing the means by which the register is moved by the typewriting niachin'e carriage. has moved to printing positlon it n'eces- Figure 17 is a top plan view of the same.

Figure 18 is a detail view of an adjustment device between the carriage and the register.

Figure 19 is a perspective view of certain error check mechanism.

- Figure 20 is a top plan view of a part of the same. a

Figure 21 is a disassembled view of the parts shown in Figure 20.

Figure 22 is a perspective view of the key lock rocker and the manual and automatic operating means therefor.

' Figure 23 is an elevation with parts in section of the train of gearing in the register. V

'Figure 24 is a top plan with parts in secrelation' of'the lock gears to the indexwlieels. r. Figure 25 is a perspective view with parts-in section of-the gearing for shifting from add to subtract and vice versa.

Figure 26 is an enlarged elevation of the spaces. A

Figure 27 is a perspective view with parts in section showin themeans for preventing simultaneous keys."

rack to prevent printing in the punctuation Figure 28 is a side elevation of the pick up dog "carried-by the carriage. I

Figure-29 isa top plan View of the same.

Figure 30 is a side elevation with parts insection showing a modification of the means ;f0ICOIlIleCtII1g the key levers to the sectors.

" Figure 31 is atop plan view ofthc same.

The 'inventionha's' been illustrated in connection with the" Royalstandard machine although it i's capable of application to any of thevarious commercia-l typewriters; The typewriting 'machine itself has been illus- 5 trated only conventionally since its precise structure forms no part of the invention.

-There is shown a machine frame A, carriage B supporting a platen C, type-barmecha- 'jnisn1 D, ribbon mechanism E and a keyboard F provided with numeralkeys G havmg levers G.' All of these parts may be of any suitable or desired construct-ion.

epression'of two numeral the rear and bottom plate and a bottom plate 6 for the front thereof so that all of the working parts of the computing mechanism are enclosed and kept free from dust or interference. The top and front plates 3 and 4 have at their juncture a narrow opening-.7 through which the registers 9 and 10 may be read. This opening may be covered by a celluloid or similar strip 8. Indices 11 and 12 denote the positions of the register.

The transverse plate 13 is carried by the bottom of the two. side plates and attached thereto by screws 14 is a plate 15 which extends about half way across the t ypewriting machine beneath the key board thereof. One of the usual front feet 16 of the type writing machine. is normally held in position by a screw 17 and this screw passes through an opening 1.8 in, the plate 15. In this mannor the attachment is. firmly secured to the frame of the typewriting machine. At the top and rearthereof the casing 1 is provided=with a plate,'\19.which is attached .to the frame of the machineby two screws 20 and 21.. 'If-iit desired to remove the attachment-from the typewriting machine it is only necessary to, take out the three screws '17.", 2O .and.;21. andthe attachment is entire- =Ly. freewsofar; asits' connection with the frame of the typewriting machine iscon- -cerned. iw 1 -"The-. plate 15;has; a broad extension 22 provided-within. series of up-turned ears 23 111 which are mounted levers 24 that extend transversely-ofthe key board of the machine and work in slots 125.11 .0116 of the side plates .2 .ofjtheradding attachment-casing. Qne end .ofr-each lever. 24 is connected by a link 26 to. one ofi the 1iumer al =;keyleyers 27.; The other end. of eaohd'eyer24 is connected bya link 28 to an arm 29 which extends forward- .ly zf-romj-asector 3.0jwhich.is mounted on a Iii shaft-31 supported inv the side: plates of: the casing. There are nine-.ofqthe levers 24001-- ;1responding--to. the 'ninenumeifal keys of the my writer; :Each sector is normally he (1 iii-position against a. stop 32 by means of a spring 33- one end of which is fastened .to'the sector-and the other 'endrof which is shocked; into a. plate 34. connected by screws 35atort-he transverse bar, 13.

Supported-by; the side walls of the casing isa platefifiwhich haslits front edge divided intoLa-series of. fingers by slots approximatel v thewidt-h of. the thickness o-f-the sectors.

These fingers are turned into substantially cylindrical shape and supported therein is a seriesof balls 38. Ateach side of the two outside fingers 37 is a projecting stop 39 integral with the plate 36. These stops are located at such position that the balls are allowed. a very slight play just sufficient to allow a projection 41 from each sector to move downward through one of the slots be tween two fingers 37. \Vhenever one of the members 41 is thus moved the balls are displaced endwise sufficiently to permit its passage but the lost motion is not sufficient to allow a second member 41 to be moved through its slot until the first member has returned to normal position. This affords means whereby only one of the numeral keys can be displaced at the same time. Since the width of this key locking mechanism is only that of the nine sectors and the balls may be relatively small and light, this mechanism places no particular additional work upon a depression of. one of the type writer keys. sectors which are constantly connected to the numeral keys this locking mechanism is always. operative regardless of whether the computing mechanism is operating or not.

The gear teeth on each sector 30 are adapted to mesh withone of the series of cam gears 42. Each cam gear-has a-hub 43 and is mounted to. rotate on the sha;ft..44,

Since it is associated with the the ends of which are supported by the (:as- 90 ing. Each cam gear has .a. series of teeth 45 on one edge thereof adapted to mesh with the teeth on the sector. It also has a series of teeth 46 varying in. number accordingto the denomination ofthe key: lever which ..2 operates it. On o e..ae o.jth ,'camge r is a cam member 47 whil e a second cam member 48 is carried on. the opposite face of the wheel. The function of these camfm'emhers. willbe explained in detail hereinafter. 9

.The shaft 50. is supporjtedfabove' the cam gears and is provide d with a -sleeve-5 1slidable and rotatable thereon, said slee Q: 'ht1V- distances oorresponding tdthe-'s,pac',es bhas one edge divided into fing'ers jmichare pivoter a series of umt pinion pawls- 56. T he tailof each pawl: is. provided with a cam 57 adaptedto cooperate with the cam 47 on the face the cam gear 42. Theother end of the pawl isprovided a dete nt nose 58 which is normallyioutof.engagement with the tecthof thenn it 53 butis adapted to he moved into engagement therewith when the awl. is operated bythe cam 47.. ll'lountec inthe casing above the'shaft is a shaft 59 provided witha sleeve 60 carrying the two master wheels 61 whi'cli are normallv engaged by; master wheel pawls 62.

These pawls carrv studs 64for a purpose 1 hereinafter described, and are normally urged into engagement ,with the master wheels by a spring 65). The pawls'62 form a part ofa frame 63 which is. mounted on a shaft 66 carried by ears 67 'extending fo'rward from the plate 68 carried by the easmg member 5. This frame (33 is formed with a downwardly extending arm 69 provided with a rearwardly projecting cam end 70 through which the frame is rocked as will be described.

It isto be noted that a sleeve 60 with the gears 61 constitute one integral element which may be defined as a. sleeve having on its periphery a plurality of series of equally spaced projections for operating a totalizer, and that there is a relieved portion between the series for clearance purposes. All portions of the device always rotate together and there is no longitudinal change of relative position between the series of projections. Instead of constituting two separate and independent master wheels, this construction really employs a single master element which may operate one or more totalizers depending on the position thereof, but always rotates them in the same direction.

The sleeve 51 which carries the unit pinions 53 normally stands with saidpinions out of register with the cam gears 42.; Before movement of the numeral keys through the sector 30 and cam gears 42 can be transmitted to the comput ng mechanism it is necessary for the unit pinions to be moved into register with said-cam gears This is brought about in the :following manner The arm, 69 has fast thereto a stud 71 carrying a mutilated crown gear 72 (see Fig. 13). Theteeth of this c rowngear 72 mesh with gear teeth 73 carried by the lower end of a vertical shaft 74 which is stepped at its lower end in anopening 75 of an arm 76 and at its upper end in an opening 77 in an offset: arm 78." Both. of the arms 76 and 78 are'{pi-efc rably integral. with a bracket attached to the rearfralne portion 5". The shaft, 74 has anj maeo near its. upper end which: is,".'provided .with' a .pin 81 that fits.

between the elongated pinion 52 and the adjacent r1nit1pinion 53. Whenever the frame 63 isro'cked, the gear 72 will rotatethe gear 73 and turn the shaft. 74. By means of the arm 80 and pin 81 this rotary movement of the shaft 74 willlslide the sleeve 51 lengthwise on the Shaft 50 thereby moving the unit. pinions 53 into register with the cam gears 42 so that rotation of said cam gears will be transmitted to the unit pinions. V

W hen the unit pinions are rotated it is obviously necessary to transmit the rotation thereof to the master gear. The direction of rotation of the master gear depends upon whether it is desired to add or subtract. This rotation is provided for in the following manherz-Two short studs 82 and 83 (Fig. 10) are mounted in appropriate supports. A sleeve on the stud 82 carries two spar-ed gears 84 and 85, (Fig. 25) the former of which always meshes with the pinion on the unit pinion sleeve 51. The gear 85 is always in mesh with a gear 86 mounted on a sleeve 87 on the stud 83. Both of the sleeves are moved together by the add and subtract lever 88 which has its rear end 10 adapted to engage a groove 89 in the sleeve 87 carrying the gear 86 and has similar engagement with the sleeve carrying the gears 84 and 85. The lever 88 (Fig. 14) is pivoted on a post 89' screwed into the shelf of the 75 gral with the ear 91 is the finger piece 92 80 which extends outwardly through a slot 93 in the casing. The finger piece 92 (Fig. 10) is held in either of the positions to which it. is moved by a ball detent 95 mounted in a depression in the frame member 3v and 85 pressed outwardly by a spring 96 against depressions in the under side of the hnger pieces 92. The lever 88 may rest directly on the shelf 3 of the support 3 as shown in Fig. 14 or may be spaced therefrom by a 0 block 97as shown in ig. 10. This will de pend upon the proportions of the various parts and their relation to each other.

\Vhen the parts are in position for subtraction the movement will be transmitted 95 from the pinion 52 to the gear 84 which is at that time in mesh with the master wheel-61.: Then it is desired to add, the finger piece 92 is moved to the add position and'the consequent movement ofthe lever 88 slides the sleevescarrying the gears 84, 85 and 86 to a position wherein the gear 84 is outof mesh with the gear 61 and the gear 86 is moved into mesh with the gear 61. Rotationof the gear 52' isthen transmitted through gears 8 1, 85 and 86 to the master wheel 61,.thereby rotating it in a direction opposite to which it was moved when the partswere posi-. tion for subtraction. Y

-The' register casing comprises side plates no 98 and 99 and a. connecting back-plate 100. It is mounted toslide .on twonro ds 101 and, 102 fast at their innertends to,;the side frame of the main casing. WVhenever. the

carriage of the typewriting machine is in:

the computing zones the register is caused to travel step by step therewith in the following manner The top plate 19 (F igsl 5, 16, 17 and 18) has fastened thereto an inverted.

channel member 103. Blocks 104 withiirlzo said member and spaced from the side thereof form with one side of the member 103 a guide-way within which-slides a rack 105 having at its inner end a right angle detent member 106 (Fig. 1) adapted to be engaged 1:5

by a pick-up dog on the carriage of the typewriting machine. This rack-meshes with a gear 107 mounted to turn with a shaft 108 supported in brackets 109 and 110 extending downwardly from the top plate 19 and the latter being preferably integral there with. The gear 107 is loose on the shaft 108 but is attached by an eccentric screw 111 to a block 112 which is fastened to the shaft 108 bya set screw 113. This eccentric is'lo'cked by a set' screw 114. The purpose of this constriiction is to enable the gear 107 to be properly positioned with relation to the carriage and the shaft 108 when the partsare assembled. The inner end of the Shaft 108 carries a gear 115 which meshes with 'a rack 116 pivotally attached at 117 to the register carriage casing. This rack slides through an opening in the side frame 2-f'ofythe casing. Attached to this rack 116 is arack 118 which has teeth corresponding to the teeth of the rack 116 throughout av portion of its extent'but at intervals is provided with wider teeth 119 for a purpose hereinafter described:

The pinion: 1Q7f has thirty-two teeth whilethe pinion 115 has forty teeth. When the u sli'a'llspaci ng of't'he characterson the typewriter of: ten to; an inch, is employed, this enablesthe rggisterwheels of the computing mechanism; to be located eight to an inch. By'g'iving additional space the members may be made of' slightly greater size andrcel'tain' complexities of construction maybeaveided. a

' The computing mechanism within the register' is cbmpos ea' qf a'serie's o'f'nriits each unit-comprising an index wheel, a, lock gear.

and; gas '1ever; -a aiai wiiee imam dial villeelf-int eriiiediate. As manyunits are provided' as there. are denominations which it is desired to; write; 1a: the resent case the cbIn'Inii manage-register "is; Shawn as prov. l mo ted i'fidi e' side p'l'a'tes"9 8" aiid" 99- of the register casing. These are broiightfbyf movem'etit'of tli reggsjtiione-by one mf/Q position prisesltwo thir'i'ge'ars I26 and 126 and'an in terpo'seddete'nt member 127; Each gear has ten 'teeth'and' the central member has ten depressions 129. A spring plate 130'is fastened to 'theba'ek member 100 of-the register frame and is divided into spring fingers 131 each of which has 'a curved portion 132 adapted to engage one of the depressions gear levers lza are pivoted on a 129 in the detent member 127. These springs serve to hold the lock gears against accidental displacement when they are moved out of engagement with the index wheels but also tend to move the lock gears toward their engagement with said index wheels. The movement of these springs is limited in one direction by a stop rod 133. The cover plate 131 is also fast to frame member 0 and extends forwardly and downwari lly being provided with slots 135. which guide the lUCl-I gear levers and retain them in proper position.

The narrow teeth of a ny index wheel- 120 n'iesh with the thin gear 1'26 carried by the l'ocl; gear lever while the tooth 122 extends to the left far enough to engage the gear 126' carried by the next lock gear lever at the left. This provides for carrying the tens since when an index wheel is rotated by the depression of the numeral key the lock gear normally engages the same to move out of mesh therewith and if the index wheel is rotated more than a complete revolution.

the tooth 122 turns the 'nextlockgear to the left the distance of one tooth, this movement being permitted by the depression 122 which permits-the passage of a tooth ofthe locking-gear. But Ithislo ck gearcat the left is in inesh'wi'tIi its ii1d1\' wheel and will. transmit this turning 'inovement thereto,

Therefore any time that an index wheel; is rotated more than a completerevolution the index wheel to the leftthereofwhichrecords. the next higher denomination will be rotated thedis t'anc'e of onetooth.

Mounted on a shaft 136 extending. between thesides. of the register casing are dialwhe'el s' 1 37jeac'h comprising afdisk of suitable rnaterial having. numerals on its edge and 'a'thin gear138afli'aedto its face. The ntrmerals l39idii thef colum n totalizer dial wheel are'jpreferably black and run in, one

(iirectigdii. while-"the 'nun'ierals on the grand, to'ta'liZ'er dial wheels are -prefeiably red and.

run in theother; direction Each 'gear 138 litis teiit'ee'th andmeshesiwith dne of alseries 'fdial intermediate gears 141 mounted on a shaft HZQwhicli'eXtendS .be'tween the sides of the register casi'ng. Each gearl il has twenty teeth separated'finto twogroupsby the deep slots 143; the purpose of which will be hereinafter se'tjfo'rth.

Extending between the side frames of the main casing: is ash'aft' 144" (Fig. 5), which carries a'- memberwhicii-from one of its main functions may be termed a key lock rocker. It comprises a metal member 145 (Figure 22) bent at its ends to substantially tubular form to fit the shaft 144 and having an upper series of fingers 146 anda lower seriesof fingers 147' substantially parallel therewith. The fingers of each series are separated by spaces 148. This key lock rocker is mounted immediately in the rear of the cam gears 42 and normally lies in a horizontal plane with the periphery of said gears lying just. within the spaces 148. At one end the shaft 144 has an arm 149 extending therefrom and provided with a roller 150 which lies adjacent the end 70 of the arm 69 of the frame 63. At the other end the shaft 144 is pro vided with a cam arm 151.

Suitably supported on a shaft 152 (Figure is a frame 153 similar in form to the frame 63 and having two upwardly extending arms 154 each provided with an offset 'ear 155. These ears lie-directly behind whichever of the lock gear levers 123 are in position to be operated whenever the key is depressed. T he'frame 153 has a depending arm 156 lying in-position to be engaged by pin 157 carried by the arm 69 of the frame 63. Pivoted to the casing at 158 is a lever 159 drawn by a spring160 toward a stud 161. This lever is engaged by the roller 150 when the shaft 144 is rocked in one direction and tends to return the key lock rocker to central position;- When the key lock rocker is rocked in the opposite direction the spring which returns the frame 63 to normal position acts through said framemto return the keylock rocker to its normal position.

lVhenever a key lever is depressed its corresponding sector 30 is actuated thereby rotating the cam gear 42 which is in mesh therewith. At thev initial movement'of this cam gear the tail 57 of the pawl 56 is engaged by the cam 47 and rocked until the nose 58 of said pawl engages the unit pinion thereby holding the same in alignment. The cam 48 then engagesone of thefingers 147 on the key lock rocker and rocks the same upwardly into the position shown in Fig. 7.

The finger of the key lock rocker which is in engagement with thisfcam 48 will thereupon cooperate'with"the:slots-or grooves 49 (F ig.

9).in the-edge of said cam and will prevent reverse rotation of; the bam'gea'r and'oonse-I quent return ofthe-key levertoZ'normal posi-' tionuntilafter. the.key lever has been fully:

depressed and the cam gear has:been rotated to the position shown in, Figure 8 wherein the cam 48 moves out ofengagement with the ,key lock rocker andthe same is returne to-itsnormal horizontal position. i

whenzthe-rparts; reach the position as shown in Figure-7.: the-roller 150.has been moved against the ends of the arm 69 of the frame 63 and the master wheel pawls 62 have been moved outof engagement with the master wheel. By this same movement of the frame 63 the gear 72 actuates'the gears 7 3 to rotate the shaft 7 4' and through the finger 81 carried thereby move len'gthwise the sleeve 51 carrying the unit pinions. This lengthwise movement of the sleeve brings the unit pinionsinto positionto mesh with the teeth of the actuated cam gear. The rearward movement of the pawl 62will by means of of connections and permits the rotation of the unit pinion to be transmitted through the intermediate gears to the master wheeland from the master wheel through the index wheel, and the dial wheel intermediate to the dial wheel and thereby sets up the proper number in the register. Shortly after the unit pinion pawl has engaged the unit pinion the tail thereof drops into a depression in the cam 47 and frees the unit pinion for movement. After the rotation of the unit. pinion has been completed and the cam gear is moved substantially into the Figure 8 position the tail of this pawl 56 again rides up on the cam and locks the unit pinions against further movement. At the same time as above stated the cam 48 is moved away from the key lock rocker and-the latter has returned to normal position. This completes the cycle of operation on the down stroke of the key.

After the key lock rocker has returned to normal position the cam gear reverses its rotation and moves in the direction indicated in Fig. 9. Thekey lock rocker is then rocked downward and the-fingers 146 will engage the slots 49 in the Team 48 and thereby prevent a second actuation of this cam-gear before its return movement is entirely com pleted. At the same time the spring 65 has, returned the frame 63 into normal position so that the pawl 62 again engages the master wheel. In the return "movement of the frame 63 the pin 157 carried by. the arm 69 thereof has engaged the depending arm 156 of the frame 153 and moved it positively toward the right in Figures-5 and 6. The offset ears 155 then come-in contact with the lock gear levers and positively return themto normal position.

It is to he. noted that when thecam gear 42 reaches the Fig.- 8- position and the key. lock rocker moves to"-'normal-position, the mechanism shown in Figs-12 and 13 has returned-the unit pinion sleeve 51 to normal 1 position so that the unit pinions are no longer in register with the cam gears and the return movement of the latter in no way affects the' register.

In order to properly position the index wheels 120 notwithstanding any play that may lie-allowed due to loosenessof the lock gears there are provided two stationary positioningcams located just to the right of the two master wheels. One of these cams is shown at 162 (Figures 3. and 4) and is formed by the upturned edge of-the plate 163 attached at its free end to the shelf of the frame member 3. The other cam 164 (Figure 3) is the upturned end of a similar plate 165 which is supported in the rear of the casing. These cams align the index wheel just preceding its engagement with the master wheel so it will move freely into engagement with the latter.

It sometimes happens that the operator depresses the wrong numeral key and discovers this fact soon enough to avoid giving the key a sutiieient blow to print from the actuated type bar. Due to the full stroke mechanism the type bar cannot move back to normal position without completing its movement. To avoid erroneous computation means is provided for permitting said type bar to be returned to normal position without printing and without actuating the computing mechanism. This means coinprises a lever 166 (Fig. 11) pivoted at 167 and having its inner end drawn downwardly by a spring 168. \Vhen this lever is depressed by a finger piece 169 the inner end thereof engages the cam arm 151 on the end ofthe shaft 144 and moves the key lock rocker to the dotted line position of Fig. 11 whereinsaid iock'er is entirely out of contact with the cam 48 on the cam gear and the cam= gear is' therefore allowed to return to-normal-position. Obviously the gears 45 and 46- are still in engagement and the reverse niovement of the cam gear will return the indicating wheel to the 'position which it occupied prior torthelpartial depression of the keys. u v e Sometimes it is desirable to depress a numeral key when in a computing zone w-ith'out' actuating the computing mechanism'. This-may occur when the figure has been printed too faintly' and it is desired to make a heavier impression: This-result may be attained by thefollo'wing mechanisms-A1 lever 17' 0- pivoted at-171 (Fig. 22) hasan ,inner 'end "iindei'ly'in'gthe'rol ler 1'50 carriedbythe arm l49zwhichzis -att-ached to the shaft 144: The'deprssion of thefinger' piece 172 will therefore lock the key lock rocker downward and moveftlle' fingers 145 and 147 out of position to be=engaged by the cam '48 on' the cam -'gear- 42; "The numeral-key may then be operated to print andmlthough mo-'- tion-will be given to the'cam gearsthis' is noatvans'mi'tted to the computing mechanis'nrdue to the fact that the key lockrocker is in inoperative position The same action is automatically brought about when the register is moved to the extreme right hand position. 'A finger 173- carried by the register engages the cam end 174 (Figs. 3 and 22) of a lever pivoted at 175 to a bracket '176' extending from the rear portion of the'frame; A link 177 connected to'the free end of this lever is'also connected tothe free endof the lever 178 pivoted to tlie casing at'179. This lever has anupstanding ear 180loc'ated directly belowtihe roller 150'andadapted to engage the same whenever thelev'etf'178' is oper' atedand thereby move the key lock rocker to inoperative position. By means of this mechanism the computing devices are disconnected froin the numeral keys of the typewriter whenever the computing register is in its right hand position.

The registers are provided with blank spares for couuuas or periods and it is desired to render it ii'npossible to depress a nuineral key when therarriage is standing opposite one of thesespaces. This result is obtained by means of a lever 1S1 (l igs. 5 and pivoted at 182 to the inner side of the left frame of the casing and retained normally in positionby a spring 183. This lever has acut out: to clear the rack lit; and a cam tooth 184 lying beneath the rack 118. The lever eritends downwardly from this point and has a forward arm 185 in position to be engaged by a plate 186 having an eye at its lower edge mounted on the shaft (36'; One of the master wheel pawls has 'a pin 187 which engages the plate when the frame 63 is rocked thus rocking lever 181 and moving cam tooth 184- into a space in the rack 11%. As has been previously stated this rack 118 is provided with wide te'eth 119 at intervals and these wide teeth are positioned so that they come opposite the cam tooth 184- when the carriagevis' standing in position for the writing of a comma or period between the denominations of the number being written; Since the cam tooth o'r'the lever will come against the wide teeth of-the r'aek 118 if akey is depressed at thistim'e-the lever 181 cannot move and consequently the whole train of mechanism is locked againstmovementaud it is im'possible-to print from a' numeral key at this point.

.The rod 1'02 (Figs. 4, 6 and 10) has two notches 188 intovwhich the lock gear levers move when they are moved by depression of the 'key. All otherlock gear levers except those immediately in register with these not'clies are locked by the rod 102- against disengagemeht.

As previously stated there are three common errors'that x mav arise in the operation of devices of this character. When the operator desires totransfer from the column totalizer to' the-grandtotalizer and clear the'formcr' it is necessary" to move the add and'snbtractlever to subtract position. This ma be forgotten. If so the total already obtained\vouldbe'double in the column register and the same amount would be sub trac'ted from the grand totalizer. If there were'no check upon the operationthe operator might insert the ne'x'tbill and continue writing without noticing the fact that both the colu'mnand grand totalizers are wrong. Means'is'therefore provided w'herebv when theregist'er casing moves to the position to transfer the sum from the column totalizer 

